ISBoxer.com

Hi, just started multiboxing and while I love it it's is kind of laggy if I don't turn down the quality. My setup is a i7-9700 3 GHz, 32 GB RAM 3000 MHz, Geforce GTX1650. This is handling a 5 man team on two monitors 27" 2560x1440. Main one 1st and 4 slaves on second monitor. I haven't touched the core settings at all.
Are the components evenly matched or is ISboxer extremely memory hungry for example?

If you check out the CPU/Memory usage of InnerSpace (which is the thing doing all the hard lifting), you will see it is not much at all.

Your games are what use the CPU/RAM/GPU, and a lot of it, depending on the settings.
A 1650GTX is your most gimped item there (although you don't mention the disk, which if purely mechanical could also be an I/O bottleneck), but it should be viable provided you are not trying to run Ultra, all Anti aliasing, Direct X 12 to the max, type setup.

Try DirectX11 Legacy as the API if not already, turn of Anti Aliasing, and have a play with the quality. Usually it is best to have the main on a decent quality level, and the backgrounds on a lessor quality.

Disk is a Samsung Evo 970 1TB M2.

So after looking around a bit, the AMD RX5700 seems like a good buy for this rig?

Yes, that should perform adequately given the setup.

Ha ha ha, even though I had set the quality slider to 1, MSA 8x anti alizing was still activated. I turned off that and now I get 30 fps on the slave windows even with slider setting 5. Seems I dont need a new graphics card after all.

That is why we suggest checking that.