The phrase 'cumbersome by' is not correct or usable in written English.
It does not make grammatical sense as presented. If you are trying to express that something is cumbersome or awkward, you could say "The task is made cumbersome by..." or "The process is made complicated by..." For example, "The task is made cumbersome by its many steps."
Big R&D processes, built to assess mass need, are cumbersome by comparison.
He was complaining about a decision-making process that was cumbersome by American standards.
If anything, the obvious cultural references that dot "The Simpsons" or "SpongeBob SquarePants" seem brazen and cumbersome by comparison.
But any deal for Ewing is made cumbersome by the $14 million salary he will make in the last year of his deal this coming season.
The process to designate a SIFI currently takes approximately two years and the Treasury proposal would make this significantly more cumbersome by requiring attempted activities-based regulatory maneuvers to run their course before assessing individual entities for designation.
The UN framework convention on climate change (UNFCCC), the secretariat for climate treaties, makes decisions by unanimous agreement of all 192 member countries, and was described as "fatally cumbersome" by one close observer.
Wrighton took all of his pictures with a cumbersome eight-by-ten camera that took fifteen minutes to set up.
The cumbersome derivation-by-hand of the sensitivity expressions is avoided, while the computational cost is roughly kept independent of the number of uncertain parameters.
They also forced people to control their privacy settings on a cumbersome item-by-item basis.
"Open by default" cuts through that cumbersome process by making government information automatically available to everyone, with exceptions for information that could breach privacy protections or threaten national security.
All the terms were either cumbersome or, by being selective, risked ignoring bravery and suffering elsewhere.
