Yeah what information do you need? im using the firefox browser on windows10, the lagging point is when the feature was first introduced,
I have also tested this on chrome and i had the same issue so this isnt browser based,
It starts out fine but the more i keep the button going the more it starts to lag till it just doesnt work anymore.
The only solution i found is to press the button in very short bursts which seem to somehow fix or not let the problem develop enough that it crashes the game.
let me know if you need any other info