diff --git a/apps/backend/src/app/modules/session/run/run-processor.class.ts b/apps/backend/src/app/modules/session/run/run-processor.class.ts
index 2171d956f..5f59893df 100644
--- a/apps/backend/src/app/modules/session/run/run-processor.class.ts
+++ b/apps/backend/src/app/modules/session/run/run-processor.class.ts
@@ -4,7 +4,7 @@ import {
   RunValidationError,
   RunValidationErrorType as ErrorType,
   Segment,
-  Tickrates,
+  TickIntervals,
   TrackType,
   RunSplits
 } from '@momentum/constants';
@@ -260,7 +260,7 @@ export class RunProcessor {
     if (header.gamemode !== session.gamemode)
       throw new RunValidationError(ErrorType.BAD_META);
 
-    if (!approxEq(header.tickInterval, Tickrates.get(session.gamemode)))
+    if (header.tickInterval !== TickIntervals.get(session.gamemode))
       throw new RunValidationError(ErrorType.OUT_OF_SYNC);
 
     const {
diff --git a/libs/constants/src/index.ts b/libs/constants/src/index.ts
index 9034ac4e9..677086531 100644
--- a/libs/constants/src/index.ts
+++ b/libs/constants/src/index.ts
@@ -25,7 +25,7 @@ export * from './enums/leaderboard-type.enum';
 export * from './enums/killswitch.enum';
 export * from './maps/gamemodes.map';
 export * from './maps/map-credit-name.map';
-export * from './maps/tickrates.map';
+export * from './maps/tick-intervals.map';
 export * from './maps/map-status-name.map';
 export * from './maps/incompatible-gamemodes.map';
 export * from './maps/map-status-change-rules.map';
diff --git a/libs/constants/src/maps/tick-intervals.map.ts b/libs/constants/src/maps/tick-intervals.map.ts
new file mode 100644
index 000000000..a352fb31f
--- /dev/null
+++ b/libs/constants/src/maps/tick-intervals.map.ts
@@ -0,0 +1,32 @@
+import { Gamemode } from '../enums/gamemode.enum';
+import { float } from '../types/utils/numeric.type';
+
+/**
+ * The tick intervals (inverse of tickrate) each gamemode uses. In Source
+ * they're floats (32-bit), so take care to use f32 rounded values in JS.
+ *
+ * @see (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround)
+ *
+ * | Tick Rate | Tick Interval |
+ * |-----------|---------------|
+ * | 66        | 0.015         |
+ * | 100       | 0.01          |
+ * | 125       | 0.008         |
+ * | 128       | 0.0078125     |
+ */
+// prettier-ignore
+export const TickIntervals: ReadonlyMap<Gamemode, float> = new Map([
+  [Gamemode.AHOP,           Math.fround(0.015)],
+  [Gamemode.BHOP,           Math.fround(0.01)],
+  [Gamemode.BHOP_HL1,       Math.fround(0.004)],
+  [Gamemode.CLIMB_MOM,      Math.fround(0.01)],
+  [Gamemode.CLIMB_KZT,      Math.fround(0.01)],
+  [Gamemode.CLIMB_16,       Math.fround(0.01)],
+  [Gamemode.CONC,           Math.fround(0.01)],
+  [Gamemode.DEFRAG_CPM,     Math.fround(0.008)],
+  [Gamemode.DEFRAG_VQ3,     Math.fround(0.008)],
+  [Gamemode.DEFRAG_VTG,     Math.fround(0.008)],
+  [Gamemode.RJ,             Math.fround(0.015)],
+  [Gamemode.SJ,             Math.fround(0.015)],
+  [Gamemode.SURF,           Math.fround(0.015)]
+]);
diff --git a/libs/constants/src/maps/tickrates.map.ts b/libs/constants/src/maps/tickrates.map.ts
deleted file mode 100644
index 56c620bf6..000000000
--- a/libs/constants/src/maps/tickrates.map.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-import { Gamemode } from '../enums/gamemode.enum';
-
-/**
- * The tickrates each gamemode uses. May change in future when we allow surf
- * 100 tick etc. 0.015 <=> 66
- * 0.01 <=> 100
- * 0.008 <=> 125
- * 0.0078125 <=> 128
- */
-// prettier-ignore
-export const Tickrates: ReadonlyMap<Gamemode, number> = new Map([
-  [Gamemode.AHOP,           0.015],
-  [Gamemode.BHOP,           0.01],
-  [Gamemode.BHOP_HL1,       0.004],
-  [Gamemode.CLIMB_MOM,      0.01],
-  [Gamemode.CLIMB_KZT,      0.01],
-  [Gamemode.CLIMB_16,       0.01],
-  [Gamemode.CONC,           0.01],
-  [Gamemode.DEFRAG_CPM,     0.008],
-  [Gamemode.DEFRAG_VQ3,     0.008],
-  [Gamemode.DEFRAG_VTG,     0.008],
-  [Gamemode.RJ,             0.015],
-  [Gamemode.SJ,             0.015],
-  [Gamemode.SURF,           0.015]
-]);
diff --git a/libs/formats/replay/src/replay-reader.spec.ts b/libs/formats/replay/src/replay-reader.spec.ts
index c4979782f..a71693230 100644
--- a/libs/formats/replay/src/replay-reader.spec.ts
+++ b/libs/formats/replay/src/replay-reader.spec.ts
@@ -25,7 +25,7 @@ describe('Replay Reader', () => {
         gamemode: Gamemode.BHOP,
         playerSteamID: 76561198039308694n,
         playerName: 'fingerprince',
-        tickInterval: expect.any(Number),
+        tickInterval: Math.fround(0.01),
         trackType: TrackType.MAIN,
         trackNum: 1,
         runTime: 30.584999316371977
@@ -33,7 +33,6 @@ describe('Replay Reader', () => {
 
       const header = readHeader(buffer);
       expect(header).toEqual(expectedHeader);
-      expect(header.tickInterval).toBeCloseTo(0.01, 5);
     });
 
     it('should throw ReplayReadError on invalid buffer', () => {
diff --git a/libs/test-utils/src/utils/run-tester.util.ts b/libs/test-utils/src/utils/run-tester.util.ts
index 10520031a..301a2eb17 100644
--- a/libs/test-utils/src/utils/run-tester.util.ts
+++ b/libs/test-utils/src/utils/run-tester.util.ts
@@ -2,7 +2,7 @@
 import {
   Gamemode,
   RunSplits,
-  Tickrates,
+  TickIntervals,
   TrackType
 } from '@momentum/constants';
 import { sleep } from '@momentum/util-fn';
@@ -207,7 +207,7 @@ export class RunTester {
       mapName: this.props.mapName,
       mapHash: this.props.mapHash,
       gamemode: this.props.gamemode,
-      tickInterval: Tickrates.get(this.props.gamemode),
+      tickInterval: TickIntervals.get(this.props.gamemode),
       playerSteamID: this.props.steamID,
       playerName: this.props.playerName,
       trackType: this.props.trackType,