That screenshot only really tells us that a lot of memory has been allocated by dopus.exe. It doesn't tell us which component allocated it.
Please follow the steps in How to find components causing memory leaks, and please start a new thread if you get results from those steps.
A description of what was happening when the leak occurred is also important. It might not be anything unusual to you, but we don't know what your usual is. The types of files being looked at around the time the leak happened are often important. As are things like right-clicking files, or changing to folders you don't often go into, both of which can trigger shell extensions and video codecs, which are almost always the causes of memory leaks. If a viewer is open or was recently used, that's also worth mentioning, along with the file types involved.
I've locked this thread as it has become a generic place to report (almost certainly unrelated) memory leaks, and has so much discussion that people are not finding the important parts & not noticing/following the guide.
Remember that memory leaks can be caused by a lot of different things, most of them 3rd party components which are loaded into Opus. You need to follow the guide I linked to work out which component is causing the leak, and post that information to the forum.