We had a similar issue with CRM 126.96.36.199 on prem. The loading of forms was excruciatingly slow.
Turns out that this is a known bug in this version. https://community.dynamics.com/crm/f/117/t/277900
The issue is that the recently Viewed items (xml) did not have a limitation of size and some had up to 300k for some entities.
There is a cRM solution to clear the list for a specific user / entity
CAVEAT: This did not really work well because the data is cached in IIS and it will repopulate the cache in the browser and vice versa I believe.
If you try that, I would suggest to
Anyway we wanted to avoid manual work, so our final solution is the following
I know it is cumbersome, but it took us a lot of time to figure the cause of the issue and then a solution…. But our users were very upset when they had the issues.
This has been running for 2 years now and we haven't had any complaints anymore.
Hope this helps
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