Translate the following English sentence to French:
"All the networks are affected by the ever-growing bureaucratic burden and, above all, by the Commission's failure to make repayments, and are very much hampered in their work."
L'ensemble des réseaux est confronté à un volume de travail administratif sans cesse croissant et, surtout, à l'absence de paiements de la part de la Commission, ce qui les limite considérablement dans leur travail.