I'm assuming that you are using "move material" here. You really giving it a proper shove inside the head. The motor skips because there is just too much "pressure" at the hotend.
When I use "move material" I generally give it 3-4 clicks at the time and then wait few seconds and then another 3-4 clicks... etc... If I do more more the extruder will shred the filament. Even at this "3 clicks/wait/3 clicks/wait speed" the flow out from the head is nice and constant.
Try to feed the cord in to the printhead manually and you will get sort of a feeling how little pressure is actually needed for nice flow.
Tension doesn't do much to skipping - it can increase or decrease grinding though. But that's probably not your problem. Let's get back to "skipping".
If the skipping is happening on the bottom layer you are probably just leveled a bit too close (nozzle too close to glass). But that doesn't affect other layers. If you are skipping on other layers you may be either printing too cold, too fast, or your printer is defective. Here are suggested max printing speeds for .2mm layers (note for .1mm layers you can print twice as fast and so on linearly):
20mm/sec at 200C
30mm/sec at 210C
40mm/sec at 225C
50mm/sec at 240C
Printing at 260C is dangerous for 2 reasons. You can turn your PLA into a caramelized gunk that clogs nozzle (best to get it out with the atomic method) and also the white teflon isolator's life wears out faster at temperatures over 240C. So for PLA I would stick to 240C as the max temp and never leave it at 240C without it printing as after a few minutes the PLA turns to brown nozzle-cloggin gunk.
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