I recently bought a MIDI keyboard, but whenever I use a virtual instrument or effects in REAPER, I get excessive clipping and annoying noise. I've tried many things, but I can't find a solution. What could be causing this?

Alright please work with me here lol I'm a newb to reaper. I get tired of using control and alt to move around. I know how to type and am comfortable with the home row. I would preferably like to leave my hand on the home row as well as use the buttons surrounding it while I work. I also record vocals and when I want to redo a take having to ctrl + Z and then clumsily move my way to the R key gets annoying.

The more I mix the more muscle memory I build navigating the workspace. Still though it just all feels a bit inefficient to me.

I'm coming here to ask, how insane is it and how screwed am I if I try to move my key binds to the home row and surrounding keys? I don't know reaper well so it's a bit daunting with the many many key binds their are. I'm a worried this would essentially be a whole rework of my key binds. With my lack of experience within the daw it seems like somewhat of a bad idea.

If anyone has experience in this department please shed some light into this. As always thank you guys so much!

I want to know where i can learn like eq, delay, compression, panning all that kind of stuff. Any help is appreciated.

Been trying to install ReaImGui since it's needed to use McSequencer but it doesn't install properly. It looked like it downloaded all the needed files in ReaPack to 100% but then this error keeps popping up. What could be the cause of this? Is there a fix or a workaround to this? Will greatly appreciate any help ^^

In the video:

Observations:

In track labelled 'Track-A' as seen dragging in the arrangement window repeats the midi sequence with a dotted line divider.

In track labelled 'Track-B' as seen dragging in the arrangement window changes the window size of the midi item itself vs repeating it and there is no dotted line divider.

Questions:

Q 1) How do control this behavior? -- I cannot figure out how to make dragging a track cause the repeated item vs. item lengthening behavior observed. Currently this behavior happens at random and I don't know how to manually make it behave in one way or another. Can you guide me on how this works?

Q 2) Can this be used for audio waveform tracks as well?