Hello @WEASELPORT .
If your issue is unrelated to the CRJ and you suffer from CTDs even in 2d then you can either wait until the next update on the 7th (no guarantee that it fixes your issue), or you can try to fix it yourself, e.g. using this.
You would need to clear your community folder and marketplace add-ons etc. for troubleshooting etc.
For CTDs that occured after Sim Update 5, you can also post your crash log of the event viewer here: Repeated CTD's 1.18.14.0 & 1.18.15.0