I'm using iClone 7 on a laptop with 2GB GTX960M graphics.
It struggles with iC7, but still usable with some workarounds.

One thing I noticed in one of my scenes, which contains quite a bit of motions/animation on the main character.
I split one of the motions using 'break' in the timeline
Next time I opened the project and attempted to continue editing motions on that character, I noticed that any rotate/move motion or transform I attempted to apply to the character, using the gizmo had roughly a 10-15 second delay before it actually moved the character. Was extremely slow and unworkable. Yet the other characters in the scene didn't have the same issues.

After working back through the animations of that character, I noticed that when I used the 'break' function on a motion clip, iClone automatically 'sampled' or expanded the motion clip into 100 or more individual key frames. When I 'flattened' that motion clip, the problem was resolved.

I still haven't exactly got my head around the enhanced timeline features in the 7.2 update, so it was probably more my lack of experience with these new features that lead to my issues. If you have a higher spec computer, it probably wouldn't be a problem. But it might assist those of us who have lower spec machines which are struggling.

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@darren....
Good of you to mention this .... 
Though not impacting on me atm (I'm yet to 'animate'), - it's these sorts of 'observations' that can be of real benefit to those who're already 'pushing the limits' with their 'modest' PC's, including myself. - We certainly need all the help we can get ...  :)

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Please be patient with me ..... I don't always 'get it' the first time 'round - not even the 2nd time! :(  - yikes! ... 

● MSI GT72VR Laptop, i7 7700HQ 4-Core 3.8 GHz 16GB RAM; Nvidia 1070, 8GB Vram ● iClone-7.93 ● 3DXChange Pipeline 7.81 ● CC-3 Pipeline 3.44 ● Live Face ● HeadShot ● Brekel Pro-Body ● Popcorn FX ● iRAY ● Kinect V2 ● DaVinci Resolve17 ● Mixcraft 8.1

It might affect performance greatly even on more powerful machines (depending on scene complexity). But you may avoid clip sampling altogether if you just create a solid key at the break point.

Yep, i have seen that happen and it can being any computer to its knees. Happened to me a couple of times, too much keys makes iclone slow no matter the computer, flattening the clip gives you your performance back

ok thanks for that tip about the solid key. I wasn't aware that was the cause. Was wondering why it only sampled that one clip that I broke when others didn't.
Unfortunately RL's own manual and even tutorial isn't great in explaining the timeline enhancement features. I've just sort of stumbled my way through it by trial & error.

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thanks sonic, whilst I've been playing around with iClone since v3, I've always been very much a novice when it comes to understanding anything more than the basic features. So when stuff like this happens it can be really frustrating and I tend to give up on it. My previous film was created using only fairly basic keyframing. But this time I've embarked on a production that I wanted to explore more features of iClone, so constantly putting myself to the challenge and facing issues along the way like this. And whilst it can be very disruptive to the workflow, it has forced me to learn the capabilities and quirks of the software, on a computer that really is beyond it's limits.

So anything like this that I find along the way, I'm going to try and share so others like me might be able to avoid those particular frustrations.

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@4u2ges: That was a very helpful tip, thanks. I've seen that key multiplication too, and it makes the timeline unwieldy. It's not just novices who are puzzled...:unsure:

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I can assure you that even on good pcs this happens, the lag and frame rate drop is incredible, I think this is probably a bug, past version didn't have this issue