Issues with headset frame rate dropping and World editor crashing headset!

I have been experiencing issues with horizon worlds crashing my headsets....

I regularly use a Quest 3 but have also had the issue on the quest pro, i have tried resetting the headset (factory reset)  and also tried multiple profiles.. but still happens..

Back story......

I am new (ish) to building and find it easier via the headset rather than desktop..  
but in the last week i am having issues whereas the fps will drop to almost non existent (at random interval's)  to the point the Worlds app crashes... I am also getting an error about using too much memory (even in empty worlds.. 
This isn't just one world either it happens in all worlds.. 
It isn't as bad in a published lobby but do occasionally have "lag" issues 


Anyone else experiencing issues or have a cure??