I was using a 0.8W VFD Spindle from Vevor on my LR3, and it was more than enough for the machine. I noticed that the real big issue with makita stile routers is with cheaper ones, they look the same, but the speed control in them is not a “constant speed” but a constant power one.
This will cause an RPM drop during demanding cuts, that brings to a thicker chipload that reduce the RPM even more.
If you increase the rpm to compensate this behaviour it will bring to a thin chip (during less aggressive cuts) that heat too much the bit, and ruining the cutting edge faster.
All of this gives you the impression that the router is underpowered.
Swapping from a Katsu to a Makita was a day and night improvement, the machine feels stronger.
With the Makita the limit was always the machine rigidity, never the router