sudden FPS drops from 144+ to 10 FPS

i have been using my laptop a short while since it's new, but 1 thing thats really annoying are these sudden and totally random fps drops. i play capped at 144 and my fps regularly drops to 10 for a few seconds before going back to 144. i am using a I5-7200U with a gtx 940mx and 8 gb of ram, operating system is Windows 10. it should be just fine for league, but these sudden fps drops are killing me could someone please help me, sincerly, Wonder x Bamboo
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