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I need some advice on how can Boost the gaming performance of my new laptop with Ryzen 5 5500U processor, 8GB RAM, NVME SSD

Hello everyone, so recently my decent gfx card died and I bought a new one, but much less powerful, but I didn't mind as long as it ran games smoothly, but I installed it and the games are lagging much worse than before, even Rocket League runs terribly and I can run that with on board graphics...

I know that UPS are rated in VA (Volt Amps) but I'm really confused in choosing the right UPS because I don't know what Power Factor to use when calculating PSU: Corsair VS 550 Active Power Factor Correction 0.99 PSU Efficiency: 85% Volts: 240V I don't know if it is Bronze, Silver or Gold...