Took a look at this example the issue is just that you are pushing your GPU too hard.
First, the SSAO TOP is extremely heavy operation. You will see a major decrease in fps as soon as this TOP is used. You can change SSAO Pass Resolution = Half to make a noticeable improvement in frame rate for a slight drop in quality.
But I understand you want the SSAO look for this, so next lets look at the other reason the GPU is under pressure.
You are using GPU instancing and creating 10000 instances. 10000 can be done but the geometry you are choosing to copy is extremely dense! Each Tube has 1844 points. Doing the math that is 1844 x 10000 point = 18,440,000 points. So your 960m is just saying ‘nope’. Even my Quadro RTX5000 is running sub 60fps with your file.
So, keeping the 10000 instances, you can drastically reduce the number of points in the tube you built. It doesn’t need for than 2 rows and then you can use a Cap SOP instead of 2 very dense spheres to cap the ends. This setup results in only 695 points as you can see in tube2 and cap1 in this file Tube_visuals.3.toe (7.2 KB)
This change alone gives my GPU about 40% more headroom.
Furthermore, The columns of the tube do not need to be set to 40 divisions. Since the tubes in the effect are so small and far from camera, 40 division is unnecessarily high as the extra detail can not be resolved from that distance. You can drop the columns down to 20 with reduces the number of points in half and notice almost no change in quality, getting you another 20% in GPU headroom.
Your GPU capabilities are different than mine, so play with this column parameter in tube2 until you get a reasonable frame rate on your system. Or you can also reduce the number of instances if that doesn’t help enough.
Of course, the SSAO TOP is the main offender, but if you want to leave it on you’ll need the balance the rest of your project by reducing the amount of work the GPU is doing with the geometry. Real-time is all about finding the limits of the hardware you are using and building something that works with the system you have.