diff --git a/config/mcap_cfg.yaml b/config/mcap_cfg.yaml
index 2f6de01..879206a 100644
--- a/config/mcap_cfg.yaml
+++ b/config/mcap_cfg.yaml
@@ -5,7 +5,7 @@ noSummaryCRC: false
 noChunking: false
 noMessageIndex: false
 noSummary: false
-chunkSize: 786432
+chunkSize: 35651584 # 34 MiB
 compression: "None"
 compressionLevel: "Default"
 forceCompression: false