diff --git a/.gitignore b/.gitignore
index 8edfb63..8857dc3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,8 @@
 
 *.mzML
 *.mzXML
+*.sqlite
+*.parquet
 
 .Rproj.user
 README.Rmd
diff --git a/R/grabMzxmlFunctions.R b/R/grabMzxmlFunctions.R
index 7997647..083e4a8 100644
--- a/R/grabMzxmlFunctions.R
+++ b/R/grabMzxmlFunctions.R
@@ -638,17 +638,22 @@ grabMzxmlSpectraVoltage <- function(xml_nodes){
 
 grabMzxmlSpectraMzInt <- function(xml_nodes, file_metadata){
   all_peak_nodes <- xml2::xml_text(xml2::xml_find_all(xml_nodes, xpath = "d1:peaks"))
-  vals <- lapply(all_peak_nodes, function(binary){
+  init_peak_encs <- xml2::xml_attr(xml2::xml_find_all(xml_nodes, xpath = "d1:peaks"), "compressionType")
+  all_peak_encs <- rep("none", length(init_peak_encs))
+  all_peak_encs[init_peak_encs=="zlib"] <- "gzip"
+  all_peak_encs[init_peak_encs=="zlib compression"] <- "gzip"
+
+  vals <- mapply(function(binary, encoding_i){
     if(!nchar(binary))return(matrix(ncol = 2, nrow = 0))
     decoded_binary <- base64enc::base64decode(binary)
     raw_binary <- as.raw(decoded_binary)
-    decomp_binary <- memDecompress(raw_binary, type = file_metadata$compression)
+    decomp_binary <- memDecompress(raw_binary, type = encoding_i)
     final_binary <- readBin(decomp_binary, what = "numeric",
                             n=length(decomp_binary)/file_metadata$precision,
                             size = file_metadata$precision,
                             endian = file_metadata$endi_enc)
     matrix(final_binary, ncol = 2, byrow = TRUE)
-  })
+  }, all_peak_nodes, all_peak_encs)
 }
 
 
diff --git a/vignettes/figures/ssc_vignette_renders/make_time_gp.png b/vignettes/figures/ssc_vignette_renders/make_time_gp.png
index 7a9317b..73dd1c4 100644
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diff --git a/vignettes/figures/ssc_vignette_renders/make_timings.rds b/vignettes/figures/ssc_vignette_renders/make_timings.rds
new file mode 100644
index 0000000..d869c5c
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diff --git a/vignettes/figures/ssc_vignette_renders/multichrom_gp.png b/vignettes/figures/ssc_vignette_renders/multichrom_gp.png
index a6d76d9..9c93508 100644
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diff --git a/vignettes/figures/ssc_vignette_renders/multichrom_timings.rds b/vignettes/figures/ssc_vignette_renders/multichrom_timings.rds
new file mode 100644
index 0000000..0c522c5
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diff --git a/vignettes/figures/ssc_vignette_renders/par_time_gp.png b/vignettes/figures/ssc_vignette_renders/par_time_gp.png
index 5ad6a80..bb05d7b 100644
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diff --git a/vignettes/figures/ssc_vignette_renders/par_timings.rds b/vignettes/figures/ssc_vignette_renders/par_timings.rds
new file mode 100644
index 0000000..de9fbc6
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diff --git a/vignettes/figures/ssc_vignette_renders/query_time_gp.png b/vignettes/figures/ssc_vignette_renders/query_time_gp.png
index d5d85ad..110bc86 100644
Binary files a/vignettes/figures/ssc_vignette_renders/query_time_gp.png and b/vignettes/figures/ssc_vignette_renders/query_time_gp.png differ
diff --git a/vignettes/figures/ssc_vignette_renders/query_timings.rds b/vignettes/figures/ssc_vignette_renders/query_timings.rds
new file mode 100644
index 0000000..40e749b
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diff --git a/vignettes/figures/ssc_vignette_renders/size_cons.png b/vignettes/figures/ssc_vignette_renders/size_cons.png
index e69b2a2..f4b116d 100644
Binary files a/vignettes/figures/ssc_vignette_renders/size_cons.png and b/vignettes/figures/ssc_vignette_renders/size_cons.png differ
diff --git a/vignettes/figures/ssc_vignette_renders/size_list.rds b/vignettes/figures/ssc_vignette_renders/size_list.rds
new file mode 100644
index 0000000..ca550b1
Binary files /dev/null and b/vignettes/figures/ssc_vignette_renders/size_list.rds differ
diff --git a/vignettes/figures/ssc_vignette_renders/sum_plot.png b/vignettes/figures/ssc_vignette_renders/sum_plot.png
index 089b8e1..e777f75 100644
Binary files a/vignettes/figures/ssc_vignette_renders/sum_plot.png and b/vignettes/figures/ssc_vignette_renders/sum_plot.png differ
diff --git a/vignettes/speed_size_comparison.Rmd b/vignettes/speed_size_comparison.Rmd
index 8c52b83..3febfdd 100644
--- a/vignettes/speed_size_comparison.Rmd
+++ b/vignettes/speed_size_comparison.Rmd
@@ -12,7 +12,7 @@ vignette: >
 ---
 
 ```{r setup, include=FALSE}
-knitr::opts_chunk$set(echo = TRUE, eval=FALSE)
+knitr::opts_chunk$set(echo = TRUE, eval=TRUE)
 options(rmarkdown.html_vignette.check_title = FALSE)
 data.table::setDTthreads(2)
 ```