diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 1fc333cf7..a6374979c 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -14,7 +14,7 @@ jobs:
       - task: CacheBeta@1
         displayName: 'cache Nim binaries'
         inputs:
-          key: NimBinaries | $(Agent.OS) | $(PLATFORM) | "$(Build.SourceBranchName)"
+          key: NimBinaries | $(Agent.OS) | $(PLATFORM) | "$(Build.SourceBranchName)" | "v2"
           path: NimBinaries
 
       - task: CacheBeta@1
diff --git a/nim.cfg b/nim.cfg
index efd5151a2..72db90c87 100644
--- a/nim.cfg
+++ b/nim.cfg
@@ -32,7 +32,8 @@
   --passC:"-march=native"
   @if windows:
     # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65782
-    --passC:"-fno-asynchronous-unwind-tables"
+    # ("-fno-asynchronous-unwind-tables" breaks Nim's exception raising, sometimes)
+    --passC:"-mno-avx512vl"
   @end
 @end