Can someone confirm with his system. Most Mikrotik routers have far less than 256M RAM, so how would they manage..
there is mikrotik routerboard with 1gb, 2gb, 4gb, 8gb and 16gb of ram
if your scenario requires RAM you need a bigger device
normally if RB750Gr3 uses more than 100mb of ram surely you have more than 100 users, i think its deserves a more powerful device
consider Rb450GX4 with a CPU 2 times powerful than RB750Gr3, 4 times their ram memory, 32 times their onboard storage memory, almost the same form factor and power consumption
of course doubles the price, but fully justifies it with its characteristics