Multiple VLANs on Bridge

Hi all;

I recently deployed a Mikrotik Router running on a PC with an i5 processor. My network consists of 8 bridges each with 60 VLANs on them but it makes the CPU Processing really high and the PC eventually hangs. Please is their a way to make the processing lower? Or is there a better way to setup the VLANs that will avoid the high processing?

Any help will be highly appreciated.

Thank you.