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.
Just like normal. If it lags, you need a better computer. There's not much you can do with the texture pack.
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
you have to buy it
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
Press Esc. in minecraft, go to options, then Video settings, set your graphics to fast, smooth lighting to off or minimum, GUI scale to small, particles to off, fullscreen to on, render distance to tiny, performance to max FPS, view bobbing to off, advanced open GL ot off, server textures of off, v-sync to off. You can also allocate more RAM to your minecraft client, just look that up. If that doesn't work then you can try getting an anti--lag texture pack, and if that doesn't work, you have a really bad computer. You should buy a new one.
lag can't be completely avoided, but you can reduce it by going to your options, and lowering quality features, such as changing fancy graphics to normal graphics
Your computer is old.
there is no viruses on minecraft just lag and pixelmon has none to
Yes, but it might lag.
That depends on your computer.
There is none. Lag is produced from your own computer, not recording systems.
use a 64-bit java to run minecraft. Or install optifine to reduce lag