When I render Lumetri color effects my footage becomes blurry

as Neil stated, try to get your video preview file format in sequence settings to 

what matches the dimensions of your sequence, so definitely not 720p...

let us know what happens, and check your exported video inside premiere pro

exactly as Neil said

First, please drag/drop images onto your text reply box so they appear in your post. Using the "attach images" option means we have to download strange files to our computers to see them. Silly forum software but ... that's what they got.

Next ... you say after you render. Your preview settings are for 720 on the 1080 sequence, so any 'render' within Premiere is going to be a lower resolution than your sequence image. That's within Premiere. You would need to set your preview and render options to the same framesize of your sequence.

Max Render Quality ... no, you don't need that. That is ONLY for when you are doing major resizing, such as 4k on a 1080 sequence, *and* you are getting jaggies on diagonal lines after render/export. Otherwise, leave it off.

Max Bit Depth is normally only of use if you do not have a dedicated GPU card. If you're using an Nvidia or AMD GPU, then you don't need it except for a couple odd situations where PrPro is known to screw up bit depths, such as DNxHD/R in the 4444 version.

What you are likely seeing on export is just how badly Apple screwed up color management of Rec709 media in their ColorSync app. To check, do an export with "reimport into project" checked. If that export looks fine in Premiere but a bit washed out and low saturation outside of Premiere, it's a color management issue.

Apple in all their wisdom chose to set their version of Rec.709 to not apply the required display referred transform function, they only apply the scene referred transform. Then they chose to use what they call "sRGB Gamma" which has been reverse-engineered by numerous experts as somewhere between 1.95 and 1.96. The Rec.709 standard is 2.4 in a semi-darkened room, 2.2 in a bright room viewing environment.

So ... it leaves users with a quandary. Ain't no good solution that works for everything. You can mod the file on export so it looks 'right' in a Mac with a Retina monitor and too dark, contrasty, and over-saturated on the other what ... 85% of screens out there. Or looks a bit light/low-sat on a Mac.

Joy.

Neil

can you also share your sequence settings please?

does it happen on all your footage or on certain formats?

this is important to answer please.. if you try lumetri on

any photo downloaded from pixabay just for testing, does

it also become blurred? if no, then probably the footage 

you are applying Lumetri to do not have enough bitrate

and color sampling... depends on the camera and footage as well..

can you please share your system specs and which version of premiere pro you are using?

in file- project settings - general - renderer .. What renderer options do you have?

make sure playback resolution is set to full inside premiere pro program monitor..

check which renderer is active also inside media encoder..

try to switch renderers to software only, if it works better, let us know which gfx card

you have and whether it will need an update...