Problem signature:
P1: Overwatch.exe
P2: 1.52.0.7722
P3: 5f5705e6
P4: RzChromaSDK64.dll_unloaded
It is possible that some modules were left behind during the uninstallation process for your Razer Synapse. Make sure that these files are no longer on the computer. If they still exist and you are unable to delete them manually, contact Razer for help.
C:\Windows\System32\RzChromaSDK64.dll
C:\Windows\SysWOW64\RzChromaSDK.dll
C:\Windows\SysWOW64\RzAPIChromaSDK.dll