don’t forget live-traffic too ( two different settings )… just try to disable the mentioned settings step by step starting with the **-traffic settings ).
V-Sync cause no CTD, it is for syncing gpu<->monitor.
An additiuonal guess: some users also reported issues with the AMD driver:
but not sure about.
“Since yesterday” sounds more like temporary network-issues, if there are not other changes at your system was done ( e.g an update of somewhat ).