Currently HD texture packs are not supported my Minecraft, and therefore are bound to lag. Having a powerful computer may prevent lag from occurring due to an HD pack, but not always. To fix lag due to HD packs try making sure the only program you are running on your computer is Minecraft as HD textures tend to make Minecraft require a lot more RAM.
Yes they are 100% safe although it may lag your minecraft (depending on the texture pack) if its a really high resolution one and u don't have a very good computer/laptop
Just like normal. If it lags, you need a better computer. There's not much you can do with the texture pack.
you have to buy it
If you have a bad computer you need to make the graphics lower, if it still doesn't work you need a better computer. Business computers don't work well (Use home premium or professional). More space on your computer can help. You should not use too many texture packs or high-quality texture packs (like LB photo realism). Having Mods is fine (just don't use too many).
Your computer is old.
there is no viruses on minecraft just lag and pixelmon has none to
That depends on your computer.
Yes, but it might lag.
There is a second download underneath the pc download for macs. macs lag less, run faster and glitch slightly more but make it near impossible to download mods and texture pack
There is none. Lag is produced from your own computer, not recording systems.
This could be for several reasons. The computer your friend is playing on may have more programs and other things running in the background that cause it to lag. It may also be because your friend has his/her graphics on Minecraft turned up.