While trying to watch high quality 720p videos with VLC Player or Media Player Classic, I noticed frequent artifacting, slowdown, stuttering, freezing when scrubbing and skipping. It turns out that hardware acceleration wasn't being used fully, and the cpu of my tablet just couldn't keep up. I tried CCCP codecs, but there was no improvement. However, after installing the codecs below I've had no a single stutter or lag, and have even gotten some neat little features like video thumbnails and details for .mkvs when you right click and check their properties. Codecs aren't just about compatibility! They are required for hardware acceleration, which is enormously vital for weak CPUs to play videos smoothly! The most taxing video I've tried is a 30 minute 720p episode of anime at 650mb, and the CPU hovers at 40%. Perhaps even 1080p could be possible? Anyway, here's how to do it. I apologise if my guide isn't too step-by-step detailed, as I do not wish to go through the install process again, and this is all through memory. Read through all this before starting, as some things may be in the wrong order! Go to this page and download the codec pack. I chose full. Download K-Lite Codec Pack Download links are in text. Any buttons you see are advertisements. The first mirror will take you to a page where the correct download button is to the right and has a file size on it. Run the installer! Let the installer uninstall Media Player Classic if you already have it installed. As you can probably notice, this installer is very in depth and complex! It will automatically continue if MPC needs to be removed. Be sure to click the "help" button on the bottom left of each installation step if you're not a codec wizard! You can leave most things default. Probably important: When selecting hardware acceleration, chose the Intel option! The Vivo Tab's Clover Trail architecture is brilliant when it comes to this! The help button will assist you if you are unsure as to what it is! IIRC, this step this was on had only 2 dropdown boxes! Don't miss it! Select Media Player Classic as your default player at the end. You can manually make .wmvs and stuff use the nice Video app later. Be sure to read through all the optional things. Some are nice. Finally, install this update if you like: K-Lite Codec Pack - Update Packs And that's it! Unfortunately, Media Player Classic has problems with complex subtitles that cover up huge chunks of the video, or follow objects on the screen (Like text next to a sign, for example). During this time, normal speech subtitles will get borked. This can be drastically fixed by ticking "allow animation when buffering" in MPC's options under "subtitles". You'll get much less problems. Whenever you pause the video, all problems will cease. Maybe this can be fixed by increasing the buffer to a higher amount.