Lag spikes and low fps when there shouldn be at all

Feb 16, 2018
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i have intel dual i5 3120 2.5ghz processor and GT 630M 2GB graphics alongside 6GB RAM in my samsung laptop and im having some lag spikes and low fps sometimes playing gta iv or crysis 2 and 3...games start normaly and everything works fine and gameplay is great and sometimes just boom i get low fps or lag spike..mostly lag spike..other than that its very playable and graphic is amazing on high..recently im playing on low or medium but its the same with lag spikes....Anyone have any ideas? drivers are all up to date, and temperatures are fine while gaming..