updated to mongodb 3.6.9 as https://jira.mongodb.org/browse/NODE-3309 is

cdxOo · cdxOo · commit 2c30863d47f5 · 2021-06-01T12:19:47.000+02:00
resolved now
diff --git a/notes b/notes
@@ -1 +1,2 @@
 https://developer.mongodb.com/community/forums/t/nodejs-driver-bulk-write-performance-issue-after-upgrade-from-v3-6-6-to-v3-6-8/108113
+https://jira.mongodb.org/browse/NODE-3309
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -21,7 +21,7 @@
   },
   "dependencies": {
     "bson": "^4.4.0",
-    "mongodb": "3.6.6"
+    "mongodb": "~3.6.9"
   },
   "repository": {
     "type": "git",

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`	`1`	`https://developer.mongodb.com/community/forums/t/nodejs-driver-bulk-write-performance-issue-after-upgrade-from-v3-6-6-to-v3-6-8/108113`
	`2`	`+https://jira.mongodb.org/browse/NODE-3309`